Tom Schweich  

Tin Cup Ridge, Jefferson County, Colorado. Lower northeast slopes of Tin Cup Ridge, the northern extension of Dakota Ridge into Golden, 4.5 km south southeast of the GNIS location of Golden. 39.7169°N, 105.2062°W. WGS 1984. Elev. 1879 m.

Coll. No. 1300, 23 Sep 2015, characters observed: Perennial herb, to 40 cm., scabrous throughout; Leaves, basal, unknown, cauline, alternate, sessile, 32 mm. × 2.7 mm. wide, linear-oblanceolate, entire, tip spinulose, gradually reduced above; Inflorescence, extended panicle; Involucre, 5 mm. × 4.5 mm. wide; Phyllaries, in 4 graduated series, 3-5 mm. × 0.8 mm. wide, chartaceous below, green above, elliptical, tip spinulose except innermost; Receptacle, epaleate; Flowers of 2 kinds, Rays, pistillate, corolla, tube 2.5 mm. + laminae 5 mm. × 1.3 mm, white spatulate; Disk flowers, corolla, 4 mm., some rose to purple, some yellow; Pappus, capillary bristles, 4.5 mm.; Cypsela, 1 mm., hairy.

Tin Cup Ridge, Jefferson County, Colorado. Openings along the rocky top of Tin Cup Ridge, the northern extension of Dakota Ridge into Golden, 4.53 km south southeast of the GNIS location of Golden. 39.7163°N, 105.2066°W. WGS 1984. Elev. 1903 m. East across US Highway 40 from the Peabody Museum dig at Magic Mountain, which was collected by E. H. Brunquist (1959).

Coll. No. 1107, 14 May 2015, characters observed (or not!): Perennial terrestrial herb, to 30 cm.; Stem very short hairy proximally (supposedly in lines but not clearly so to me), becoming glandular-hairy in the inflorescence; Leaves, basal and cauline, glabrous, basal, petiole, 20 mm., blade, 35 mm. × 13 mm. wide, ovate, entire, cauline, petioled 8 mm. to sessile distally, 25 mm. × 7 mm. wide, margin entire to minutely toothed distally; Inflorescence, thryse, 8 to 12 flowers per node; Calyx, lobe 2 mm. + 5 lobes 2 mm. = 4 mm.; Flowers, zygomorphic, parts in 5s, not spurred; Corolla fused at base, purple, 15 mm., lobes 2 mm., limb 10 mm., outer surface glandular-pubescent; Stamens, 4, included, staminode 1, hairy at tip; Anther, purple, sacs papillate.

Tin Cup Ridge, Jefferson County, Colorado. In shrubby vegetation along the top of Tin Cup Ridge, the northward extension of Dakota Ridge into Golden, 4.58 km south southeast of the GNIS location of Golden. 39.716°N, 105.2066°W. WGS 1984. Elev. 1905 m. East across US Highway 40 from the Peabody Museum dig at Magic Mountain, which was collected by E. H. Brunquist (1959).

Coll. No. 1108, characters observed: Perennial herb, to 60 cm.; Leaves, basal and cauline, some densely tomentose along petiole and mid-vein, else thinly tomentose, basal, petiole 60 mm. + blade ovate 110 mm. × 35 mm. wide, margin entire to slightly scalloped (somewhat more like that described for P. crocata), cauline, sessile, lance-linear, 130 mm. × 15 mm. wide, reduced above, margins, some with small, dense, sharp teeth; Inflorescence, ±8 heads per stem; Phyllaries in 1 series, (partially enclosing alternate ray and disc flowers), 6 mm. × 1.7 mm. wide, tips mucronate; Receptacle epaleate; Pappus of bristles in ±1⁺ series, 6-7 mm.; Ray flowers, few (8-12), ♀-only, tube 4 mm. + blade 8 mm. = 12 mm. × 3 mm. wide; Disc flowers bisexual.

Tin Cup Ridge, Jefferson County, Colorado. Among rocks along the top of Tin Cup Ridge, the northern extension of Dakota Ridge into Golden, 4.7 km south southeast of the GNIS location of Golden. 39.7148°N, 105.2063°W. WGS 1984. Elev. 1929 m.

Coll. No. 1299, 23 Sep 2015, characters observed: Perennial herb, to 60 cm.; Stem erect, stipitate-glandular, more dense above; Leaves, basal, unknown, cauline, alternate, sessile, 50 mm. × 4-5 mm. wide, reduced above, lance-linear, spinulose toothed; Inflorescence, panicle, heads borne singly on pedicels 10-20 mm.; Involucre, 8 mm. × 12 mm. wide; Phyllaries, 5+ series, imbricate, chartaceous below, green and stipitate-glandular above, tips, acuminate, reflexed; Receptacle, epaleate; Flowers of 2 kinds; Rays, fertile, corolla, tube 4.5 mm. + laminae 10 mm. × 1.5 mm. wide, spatulate, blue; Disk flowers, corolla, 6 mm., yellow; Pappus, capillary bristles, 6 mm.; Cypsela, 3 mm., hairy.

Flower Heads of Coll. No. 1298, Senecio spartioides

Senecio spartioides Torr. & A. Gray. Broomlike Ragwort.

Tin Cup Ridge, Jefferson County, Colorado. Among rocks along the top of Tin Cup Ridge, the northern extension of Dakota Ridge into Golden, 4.7 km south southeast of the GNIS location of Golden. 39.7147°N, 105.2062°W. WGS 1984. Elev. 1928 m.

Coll. No. 1298, 23 Sep 2015, characters observed: Perennial herb, to 50 cm.; Leaves, basal, unknown, cauline, alternate, 90 mm. × 3 mm. wide, narrowly oblanceolate, reduced above to 30 mm. × 1 mm. wide, variously hairy in axils and ±lower surface; Involucre, 12.5 mm. × 6 mm., narrowly campanulate, bractlets not prominent; Phyllaries, 2 series? or 1 series with 2 forms? outer, 7.5 mm. × 0.7 mm. wide, all green, inner, 7.5 mm. × 1.3 mm. wide, centrally green with margins chartaceous, all tips dark; Receptacle, epaleate; Rays, fertile, corolla, tube 5 mm. + blade 9 mm. × 2 mm. wide, yellow, lobes 3; Disk flowers, corolla, 6 mm., yellow; Pappus, 1 series of fine capillary bristles, 5 mm.; Cypsela, 4 mm., 5-angled, dark gray, “hirtellous” throughout (not just the angles).